Elevating apparatus particularly adapted for television receiver support-tables and the like

Claim 1

An elevating apparatus particularly adapted for horizontal supporting platforms for television receivers and the like which are movable in height through the action of a motor, so as to elevate the receiver to a desired height for its use, as well as to lower the same to a position where it may be concealed, the improvement characterized by nut means rigidly connected to the supporting platform and receiving vertical screw means for driving the same in order to elevate and lower the supporting platform in response to the direction of rotation of the screw means; means connected with the said motor for rotating the screw means and comprising notched pulley and belt means connecting the motor to the lower end of the screw means; and braking means coupled to said screw means and operable during rotation of the screw means by the notched pulley and belt means in a direction to lower the supporting platform, the braking means comprising idler means operative to activate the braking when the screw means is rotated in the platform lowering direction only.